For a basement system like that, personally, I would pick up an array of the Crown amps, they sound great for movies or music.
prices are. Great, and the Crown amps will drive about %80 of mos speakers. Headroom, power, clean , reliable.
Search around this and other forums, those Crown amps are great!
Great sound and save money.
Work smart, not hard.
I’m a 2 ch guy only, good amps, and speakers which many call junk. YOUR EARS are the judge! No one else’s.
the Crown amps sound great, are reliable, easy to install and use.
or the QSC amps are good too, but have heard reliability issues!
Skip the high dollar amps, and try the Crowns for a basement surround system. Would b my choice for an installation like your talking about.
Have fun shopping and listening to amps etc.
the more power you have, the more headroom, and ease of clarity you will get from speakers.
140W is ok, but you won’t get the slam, or detail needed for song/movie ending crescendo’s.
In my 30+ years of audio gear, I’ve only found rapture with 300WPC min!
you will need the headroom, and you will want to jam some tunes in 2ch, and 140W no matter what is not enough!
Spend now, get enough power for your system, or go with the 140W and regret it the first time you want to “push” your volume for your fav song, and the map clips and you blow a tweeter or midrange
sure 140W will sound fine at low to moderate volume, but you will want to show off your new addiction, to friends, family, buddies, etc!
B&W’s are amazing, and you will need the juice to make them sound their best.
Speaking from 30+ years of experience.